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Genomics. 1994 Sep 1;23(1):163-7.

Localization of the VHR phosphatase gene and its analysis as a candidate for BRCA1.

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  • 1Myriad Genetics, Inc., Salt Lake City, Utah 84108.


The VH1-related human protein (VHR) gene was localized to human chromosome 17q21 in a region thought to contain the BRCA1 locus, a locus that confers susceptibility to breast and ovarian cancer. VHR encodes a phosphatase with dual specificity for tyrosine and serine residues. Thus it is a plausible candidate for a tumor suppressor gene such as BRCA1. To test this possibility, the VHR coding sequence was screened in individuals with familial breast cancer and in sporadic breast tumor and breast cancer cell lines. No mutations were detected, suggesting that the VHR gene is not BRCA1.

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